University of Illinois Urbana-Champaign

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Showing 5341–5370 of 5,599 items
Thumbnail for Potential surface water reservoirs of north-central Illinois
Potential surface water reservoirs of north-central Illinois
Dawes, Julius Henry; Terstriep, Michael Lee

Thumbnail for Geology of the fluorspar deposits of Illinois
Geology of the fluorspar deposits of Illinois
Weller, James Marvin; Grogan, Robert Mann; Tippie, Frank Emerson, joint author